Harrison, AR 72601 (870) 741-3600. Doctors in Crossroads Medical Clinic. Dr. Robert M Causey MD. Family Medicine. Harrison, AR. 4.4. ... Here are some Group Practices near Crossroads Medical Clinic Harrison, AR. Paula Ann Stapleton Md. Medical Genetics . Harrison, AR 0.76 mi. Cornerstone Medical Clinic Pllc ....